12190538 has 16 divisors (see below), whose sum is σ = 18882504. Its totient is φ = 5898240.

The previous prime is 12190537. The next prime is 12190559. The reversal of 12190538 is 83509121.

It can be written as a sum of positive squares in 4 ways, for example, as 10349089 + 1841449 = 3217^2 + 1357^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12190538.

It is not an unprimeable number, because it can be changed into a prime (12190537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18698 + ... + 19338.

Almost surely, 2^12190538 is an apocalyptic number.

12190538 is a deficient number, since it is larger than the sum of its proper divisors (6691966).

12190538 is a wasteful number, since it uses less digits than its factorization.

12190538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 937.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 12190538 is about 3491.4950952278. The cubic root of 12190538 is about 230.1482220391.

Adding to 12190538 its reverse (83509121), we get a palindrome (95699659).

The spelling of 12190538 in words is "twelve million, one hundred ninety thousand, five hundred thirty-eight".